Winbtowing-mill



N. FEYRS. PNOTOLITHOGRAPHER. WASHINGTON D C UNITE STATES PATENT OFFIO.

HORACE N. GOODRIOH, OF AURORA, ILLINOIS.

WINNOWING-IVIILL.

Specification of Letters Patent No. 14,865, dated May 13, 1856.

- Various Kinds; and I do hereby declare the following to be a full,clear, and exact description of the same, reference being had to theaccompanying drawings, making a part thereof, in which- Figure 1,represents a perspective view. Fig. 2, represents a central longitudinaland vertical section through the same on an enlarged scale. Figs. 3 and4, represent modifications of the machine, as arranged for theseparation and cleaning of grains and seeds of variable sizes, such asare grown by agriculturists.

Similar letters where they occur in the several figures, denote the samegeneral parts in all.

The object of my invention is to embrace within one machine, all theelements necessary not only to the cleaning, but the separation of allsuch grains and seeds, according to their kinds as are produced or growngenerally by farmers, and the nature of my invention consists in thearrangement of series of graduated screens placed above the screens ofan ordinary winnowing machine, in connection with an auxiliary blastproduced by the main fan blower, or an additional blower, for thepurpose of causing such separation, and cleaning, in a very.

effectual manner, aswill be described.

To enable others skilled in the art to make and use my invention, I willproceed to describe the same with reference to the drawings.

In the perspective view Fig. 1, the general construction of the machineis shown, resembling in its outline the winnowing machines in commonuse, but arranged more especially for the separation of the smallerseeds such as timothy or herd-grass.

Fig. 2, shows the interior of the machine, the parts thereof beingarranged for separating wheat, from such impurities as are generally tobe found mixed with it, as follows: A, is a Zinc-screen, as I term it,being made of a plate of Zinc or other metal, with suitable openingspunched through it. The material to be cleaned and separated, is throwninto the hopper N, Fig. 1, and from thence passes along the zinc-screenA, where the rst separation t-akes place, the wheat and smaller gainspassing through said screen, while some of the pure grains such as oats,together with the larger impurities are retained, until they pass to theend of the said screen. Underneath the screen A, is a fine wheat sieveB, which retains the larger grains and allows the smaller to passthrough onto another screen O, below it, which has a different grade ofmesh or opening, for a third separation. The finer impurities retainedon the screen C, after arriving at the end of the screen, are caughtatL, and passing through L, are discharged at H, where they are caught ina proper box or chamber.

D, is a screen board, upon which the light seeds and impurities, whichmay have passed through the series of screens above it, are caught andcarried to L, and from thence, as just above described, to the place ofdischarge at I-I. This screen board D, should be removable, so that incase timothy or clover seed should be mixed with the heavier grains, itmay be saved separate from the light impurities, said seed passing alongto L where a shoe receives it, and passes it out, through a flexiblespout, at a, a, Fig. 1.

O, Fig. 2, represents a fan wheel such as is ordinarily used on machinesfor cleaning grain, and K, is a smaller fan blower, which may be drivenfrom the shaft of the one O, by an endless belt or otherwise. The fan K,is not actually necessary at the point where it is located, but a blastof air at that point is so, and the fan K, is shown as a means of givingthat blast. The necessary current of air to keep the material in motionon the series of screens A, B, C, and to aid in its separation, may bederived from the main fan wheel O, either by an arrangement of windboards, or by the placing of the fan wheel so that it-s blast shall becommon to all the wind spaces between the screens, in which case, thesecondary blower K, may be dispensed with.

J, is a hinged door, commento the spaces between A, B, C, D, and thisdoor may be raised or lowered, as circumstances may require, to regulatethe current of air passing through said spaces; or, for adapting suchcurrent to the divisions and separations to be made on said screens.

Fig. 3, represents the machine for cleaning timothy seed after chatting,wherein the screens A, and E, are considerably elongated, as well as theshoe M, which is to receive and convey the seeds into their properreceptacle. In this modification, the same general principle isinvolved, the screening surfaces being only increased in area by eX-tending them lengthwise. In this ligure, as also in Fig. 2, is a dropdoor I, which is closed or opened according to the kind of separationthat is to be made, and the delivery thereof.

Fig. 4, represents the machine as arranged for the separation of flaxseed, the impurities being taken olf at H.

Of that part of the machine below the screen board D, no particulardescription need be given as it may in every particular be the same asin the winnowing machines of common use. My invention relates to thatpart of the machine above D, which in an ordinary fanning mill would bethe top or outside case, and I lay no claim to t-he arrangement of partsbelow the point or line of the screen or screen board D, as the case maybe. The screens of course are to be graduated for their special purpose,and the gains or grooves into which they slide, should be such as toadmit of their ready removal and replacement.

Having thus fully described the nature of my invention, what I claimtherein as new and desire to secure by Letters Patent is The arrangementof the screens A, B, C, D, above the ordinary screens and shoes, of acommon fanning mill, and furnishing a regulated blast to said series ofscreens, either from the main fan wheel or an auX- iliary wheel nearthereto, for the purpose of comprising within one machine or frame the

